A multi-functional protective device for the chassis of a cargo truck

Abstract

This utility model relates to the field of truck chassis protection technology, and discloses a multi-functional protective device for truck chassis, including a main protective plate and local reinforced protective components. The main protective plate is used to cover the key areas of the entire truck chassis. The main protective plate adopts a double-layer reinforced composite structure, with an outer layer of high-manganese steel substrate and an inner layer of carbon fiber composite layer. The high-manganese steel substrate and the carbon fiber composite layer are bonded together with high-temperature resistant epoxy resin adhesive. Multiple longitudinal reinforcing ribs are spaced apart along the width direction on the surface of the main protective plate. In this utility model, the main protective plate adopts a double-layer design of high-manganese steel substrate and carbon fiber composite layer. The high hardness of the outer layer of high-manganese steel resists the impact of gravel, while the inner layer relies on the rigidity of carbon fiber to assist in resisting deformation. Combined with a ceramic wear-resistant coating on the surface and stainless steel edging, it achieves impact protection, wear protection, and corrosion protection for the entire chassis area.

Description

Technical Field

[0001] This utility model relates to the field of truck chassis protection technology, and in particular to a multi-functional protective device for truck chassis. Background Technology

[0002] As core equipment for logistics transportation and engineering operations, the chassis of freight trucks are directly exposed to the driving environment and must withstand multiple tests from the road surface.

[0003] In actual operation, trucks often travel on unpaved roads such as gravel roads, muddy roads, and construction site access roads. Road debris and protruding hard objects will directly impact the chassis, especially components such as the engine oil pan and gearbox housing. If the protection is insufficient, cracks or even leaks can easily occur. Long-term scraping by mud, sand, and sharp debris will wear down the protective layer of chassis pipelines, leading to accelerated aging of pipelines. Traditional chassis protection often uses single-layer steel plates, which are prone to bending and deformation under large impact forces. This not only loses its protective function but may also cause secondary damage to chassis components due to deformation and compression. In addition, the single-layer structure has weak fatigue resistance and is prone to weld cracking and loosening under long-term vibration. Furthermore, integral protective plates are difficult to fit the irregular structure of different vehicle chassis, resulting in blind spots in protection. Summary of the Invention

[0004] To overcome the above deficiencies, this utility model provides a multi-functional protective device for the chassis of a cargo vehicle, aiming to improve the problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a main protective plate and a local reinforced protective component, wherein the main protective plate is used to cover the key areas of the entire chassis of the cargo truck; The main protective plate adopts a double-layer reinforced composite structure. The outer layer is a high-manganese steel substrate, and the inner layer is a carbon fiber composite layer. The high-manganese steel substrate and the carbon fiber composite layer are bonded together with high-temperature resistant epoxy resin. Multiple longitudinal reinforcing ribs are arranged at intervals along the width direction on the surface of the main protective plate. The longitudinal reinforcing ribs and the high-manganese steel substrate adopt an integral forging and molding structure. The edge of the main protective plate adopts a folded edge and edge-wrapping composite structure. The edge-wrapping is made of stainless steel. Its inner side is fixed to the folded edge of the main protective plate by argon arc welding. After welding, passivation treatment is performed. The localized reinforced protection components are provided in multiple sets for key components such as the chassis engine oil pan, gearbox housing, and drive shaft bearing seat, including arc-shaped protective covers, buffer support columns, and reinforced connecting plates; The arc-shaped protective cover is made of wear-resistant high-manganese steel and is formed by stamping. The outer surface is coated with a high-hardness wear-resistant coating. Multiple transverse reinforcing ribs are spaced along the length of the top of the arc-shaped protective cover. The transverse reinforcing ribs are integrally stamped with the arc-shaped protective cover. The buffer support column is a solid steel column with both ends milled flat. One end of the buffer support column is welded to the inside of the arc-shaped protective cover by carbon dioxide gas shielded welding. After welding, it is inspected for flaws. The other end has an internal threaded hole in the center and is connected to the chassis component bracket by high-strength bolts. A polyurethane buffer sleeve is fitted on the outside of the buffer support column. The inner side of the polyurethane buffer sleeve has an axial guide groove, which can cooperate with the guide protrusion on the outer surface of the buffer support column to achieve positioning.

[0006] As a further description of the above technical solution: the reinforcing connecting plate is a Q355 steel plate, and its shape is set as L. It is located on the side connected to the arc-shaped protective cover and is welded and fixed to the edge of the arc-shaped protective cover by fillet weld. Multiple waist-shaped holes are opened on the side connected to the main protective plate, and it is fixed to the main protective plate by bolts.

[0007] As a further description of the above technical solution: the lower surface of the high manganese steel substrate in the main protective plate is coated with a ceramic wear-resistant coating. The ceramic wear-resistant coating is prepared by plasma spraying process, and the coating material is Al2O3-TiO2 composite ceramic. The surface of the ceramic wear-resistant coating is sandblasted.

[0008] The inner side of the arc-shaped protective cover of the locally reinforced protective component is covered with sound-absorbing cotton, which is made of gradient density polyurethane and is attached to the inner side of the arc-shaped protective cover with high-temperature pressure-sensitive adhesive.

[0009] As a further description of the above technical solution: the carbon fiber composite layer inside the main protective plate has carbon fibers arranged in a unidirectional manner, with the arrangement direction consistent with the length direction of the main protective plate.

[0010] As a further description of the above technical solution: the high-temperature resistant epoxy resin adhesive used to bond the high-manganese steel substrate and the carbon fiber composite layer can still maintain high shear strength under high-temperature aging and low-temperature environments, and there is no cracking or delamination at the bonding point.

[0011] This utility model has the following beneficial effects: 1. In this utility model, the main protective plate adopts a double-layer design of high manganese steel substrate and carbon fiber composite layer. The high hardness of the outer layer of high manganese steel resists the impact of gravel, while the inner layer relies on the rigidity of carbon fiber to resist deformation. Combined with the surface ceramic wear-resistant coating and the edge stainless steel edging, it achieves impact resistance, wear resistance and corrosion resistance for the entire chassis area. Compared with the traditional single-layer protective structure, it can effectively cope with various types of damage under complex road conditions such as construction sites and mining areas, significantly reduce the maintenance rate of chassis components and extend their service life.

[0012] 2. In this utility model, the guide groove of the buffer support column and the convex strip cooperate to achieve precise positioning, ensuring that each component is firmly connected during vehicle driving vibration. The gradient density sound-absorbing cotton on the inner side of the arc-shaped protective cover can absorb chassis vibration noise and improve the driving environment. The polyurethane buffer sleeve can buffer impact and reduce component friction. The high-temperature resistant epoxy resin is suitable for extreme temperature conditions. For core components such as the engine oil pan, the arc-shaped protective cover tightly wraps them and the lateral reinforcing ridges improve the resistance to compression, forming targeted protection. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a multi-functional protective device for a truck chassis proposed in this utility model.

[0014] Figure 2 This is a schematic diagram of the stainless steel edging structure of a multi-functional protective device for a truck chassis proposed in this utility model.

[0015] Figure 3 This is a schematic diagram of the arc-shaped protective cover structure of a multi-functional protective device for a cargo truck chassis proposed in this utility model.

[0016] Figure 4 This is a schematic diagram of the transverse reinforcing ridge structure of a multi-functional protective device for a truck chassis proposed in this utility model.

[0017] Legend: 1. Main protective plate; 11. High manganese steel substrate; 12. Carbon fiber composite layer; 13. Longitudinal reinforcing ribs; 14. Stainless steel edging; 2. Locally reinforced protective components; 21. Arc-shaped protective cover; 22. Buffer support column; 23. Reinforced connecting plate; 24. Polyurethane buffer sleeve; 25. Transverse reinforcing ribs; 26. Sound-absorbing cotton. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-4 One embodiment of this utility model includes a main protective plate 1 and a local reinforced protective component 2. The main protective plate 1 is used to cover the key areas of the entire chassis of the truck. The local reinforced protective component 2 is set in multiple sets for each core component such as the chassis engine oil pan, gearbox housing, and drive shaft bearing seat, so as to achieve targeted reinforced protection for key components.

[0020] The main protective plate 1 adopts a double-layer reinforced composite structure. The outer layer is a high manganese steel substrate 11, and the inner layer is a carbon fiber composite layer 12. The high manganese steel substrate 11 and the carbon fiber composite layer 12 are bonded together with high-temperature resistant epoxy resin. Multiple longitudinal reinforcing ribs 13 are arranged at intervals along the width direction on the surface of the main protective plate 1. The longitudinal reinforcing ribs 13 and the high manganese steel substrate 11 adopt an integral forging and molding structure. The edge of the main protective plate 1 adopts a folded edge plus edge-wrapping composite structure. The edge-wrapping is a stainless steel edge 14. Its inner side is fixed to the folded edge of the main protective plate 1 by argon arc welding. After welding, it is passivated. The lower surface of the high manganese steel substrate 11 in the main protective plate 1 is coated with a ceramic wear-resistant coating. The ceramic wear-resistant coating is prepared by plasma spraying process. The coating material is Al2O3-TiO2 composite ceramic. The surface of the ceramic wear-resistant coating is sandblasted.

[0021] The carbon fiber composite layer 12 inside the main protective plate 1 has carbon fibers arranged in a unidirectional manner, with the arrangement direction consistent with the length direction of the main protective plate 1.

[0022] The high-temperature resistant epoxy resin adhesive used to bond the high-manganese steel substrate 11 and the carbon fiber composite layer 12 can still maintain high shear strength under high-temperature aging and low-temperature environments, and there is no cracking or delamination at the bonding joint.

[0023] Specifically, the main protective plate 1 adopts a double-layer reinforced composite structure. The outer layer is a high-manganese steel substrate 11. High-manganese steel has high Brinell hardness and excellent impact and wear resistance, which can directly resist the impact and scratches of foreign objects such as gravel and mud. The inner layer is a carbon fiber composite layer 12, with high-strength carbon fiber as the reinforcement and epoxy resin as the matrix. The carbon fiber adopts a unidirectional arrangement, and the arrangement direction is consistent with the length direction of the main protective plate 1, which can significantly improve the structural rigidity of the composite layer in the length direction, help the high-manganese steel substrate 11 resist bending deformation, and prevent the main protective plate 1 from deforming due to uneven stress. The high-manganese steel substrate 11 and the carbon fiber composite layer 12 are bonded with high-temperature resistant epoxy resin adhesive. This high-temperature resistant epoxy resin adhesive can still maintain high shear strength under high-temperature aging and low-temperature environments, and the adhesion is strong. There is no cracking or delamination at the joint, and the bonding performance can be maintained stably over a wide temperature range. This effectively prevents the double-layer structure from delaminating due to temperature changes, adapting to extreme temperature conditions in different regions. The longitudinal reinforcing rib 13 and the high-manganese steel substrate 11 adopt an integral forging and molding structure. Through its own structural deformation, it disperses the local load borne by the main protective plate 1, reduces the stress concentration coefficient, and further improves the deformation resistance of the main protective plate 1. The edge of the main protective plate 1 adopts a folded edge and edge-wrapping composite structure. The edge wrapping is made of stainless steel 14, and its inner side is fixed to the folded edge of the main protective plate 1 by argon arc welding. After welding, passivation treatment is performed, which can not only prevent edge corrosion and extend the overall service life of the main protective plate 1, but also prevent sharp edges from scratching the chassis pipelines during driving and protect the chassis auxiliary components.

[0024] In addition, the lower surface of the high manganese steel substrate 11 of the main protective plate 1 is coated with a ceramic wear-resistant coating. The ceramic wear-resistant coating is prepared by plasma spraying process. The coating material is Al2O3-TiO2 composite ceramic, which has high bonding strength and can further improve the wear resistance of the main protective plate 1. The surface of the ceramic wear-resistant coating is sandblasted, which can enhance the friction between the coating and foreign objects, prevent foreign objects such as gravel from sliding on the coating surface and causing scratches, and further extend the service life of the main protective plate 1.

[0025] The localized reinforced protective components 2 are configured in multiple sets for key components such as the chassis engine oil pan, gearbox housing, and drive shaft bearing housing. These include an arc-shaped protective cover 21, a buffer support column 22, and a reinforcing connecting plate 23. The arc-shaped protective cover 21 is made of wear-resistant high-manganese steel, formed by stamping, and coated with a high-hardness wear-resistant coating on its outer surface. Multiple transverse reinforcing ribs 25 are spaced along the length of the top of the arc-shaped protective cover 21, and the transverse reinforcing ribs 25 are integrally stamped with the arc-shaped protective cover 21. The buffer support column 22 is a solid steel column with both ends milled flat. One end of the buffer support column 22 is welded to the inner side of the arc-shaped protective cover 21 by carbon dioxide gas shielded welding and is inspected for flaws after welding. The other end has an internal threaded hole in its center, which is connected to the chassis component bracket by high-strength bolts. A polyurethane buffer sleeve 24 is fitted on the outer side of the buffer support column 22. The inner side of the polyurethane buffer sleeve 24 has an axial guide groove, which can cooperate with the guide protrusion on the outer surface of the buffer support column 22 to achieve positioning. The reinforcing connecting plate 23 is made of Q355 steel plate and is L-shaped. It is located on the side connected to the arc-shaped protective cover 21 and is welded to the edge of the arc-shaped protective cover 21 by fillet weld. The side connected to the main protective plate 1 has multiple waist-shaped holes and is fixed to the main protective plate 1 by bolts.

[0026] Specifically, the arc-shaped protective cover 21 is made of wear-resistant high-manganese steel and is formed by stamping. Its shape is adapted to the corresponding chassis components, which can tightly wrap the key components and reduce blind spots. The outer surface of the arc-shaped protective cover 21 is sprayed with a high-hardness wear-resistant coating to further improve its resistance to mud and sand abrasion. Multiple transverse reinforcing ribs 25 are set at intervals along the length of the top of the arc-shaped protective cover 21. The transverse reinforcing ribs 25 are integrally stamped with the arc-shaped protective cover 21, which can enhance the radial compression resistance of the arc-shaped protective cover 21, prevent the protective cover from being dented due to accidental impact, and ensure effective wrapping of key components.

[0027] The buffer support column 22 is a solid column made of No. 45 steel. Both ends are milled to ensure flatness and the fit and stability of the connection surface. One end of the buffer support column 22 is welded to the inner side of the arc-shaped protective cover 21 by carbon dioxide gas shielded welding. After welding, flaw detection is performed to avoid defects such as porosity and cracks in the weld and to ensure connection strength. The other end has an internal threaded hole in the center, which is connected to the chassis component bracket by high-strength bolts to ensure a stable connection between the local reinforced protective component 2 and the chassis and to prevent the component from loosening. A polyurethane buffer sleeve 24 is fitted on the outside of the buffer support column 22. The inner side of the polyurethane buffer sleeve 24 has an axial guide groove, which can cooperate with the guide protrusion on the outer surface of the buffer support column 22 to achieve positioning. It can effectively absorb the vibration impact during driving, reduce the vibration friction between the protective component and the chassis component, protect the chassis component from vibration damage, and reduce the wear of the protective component itself.

[0028] The inner side of the arc-shaped protective cover 21 of the local reinforced protective component 2 is covered with sound-absorbing cotton 26. The sound-absorbing cotton 26 is made of gradient density polyurethane and is attached to the inner side of the arc-shaped protective cover 21 by high temperature pressure-sensitive adhesive.

[0029] Specifically, the sound-absorbing cotton 26 is made of gradient density polyurethane sound-absorbing cotton, which has a high sound absorption coefficient over a wide frequency range. It can effectively absorb the vibration noise generated when the chassis components are working, reduce noise pollution during vehicle operation, and improve driving comfort. The sound-absorbing cotton 26 is bonded to the inside of the arc-shaped protective cover 21 with high-temperature pressure-sensitive adhesive. The pressure-sensitive adhesive maintains its adhesion over a wide temperature range, ensuring that the sound-absorbing cotton 26 will not fall off in the long term and guaranteeing the stability of the noise reduction effect.

[0030] During assembly, the main protective plate 1 is first fixed to the key area of ​​the chassis, and then the local reinforced protective components 2 are installed to the outside of the core components of the chassis through the reinforcing connecting plate 23. During use, the main protective plate 1 resists the overall impact, the local reinforced protective components 2 protect the key components, and the sound-absorbing cotton 26 absorbs noise, thus achieving the dual functions of protection and noise reduction.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-functional protection device for a truck chassis, comprising a main protection plate (1) and a locally reinforced protection assembly (2), characterized in that: The main protective plate (1) is used to cover the key areas of the entire chassis of the cargo vehicle; The main protective plate (1) adopts a double-layer reinforced composite structure. The outer layer is a high manganese steel substrate (11), and the inner layer is a carbon fiber composite layer (12). The high manganese steel substrate (11) and the carbon fiber composite layer (12) are bonded together with high-temperature resistant epoxy resin. Multiple longitudinal reinforcing ribs (13) are spaced apart along the width direction on the surface of the main protective plate (1). The longitudinal reinforcing ribs (13) and the high manganese steel substrate (11) adopt an integral forging and molding structure. The edge of the main protective plate (1) adopts a folded edge plus edge-wrapping composite structure. The edge-wrapping is a stainless steel edge-wrapping (14). Its inner side is fixed to the folded edge of the main protective plate (1) by argon arc welding. After welding, passivation treatment is performed. The local reinforced protection component (2) is provided in multiple sets corresponding to the chassis engine oil pan, gearbox housing, and drive shaft bearing seat, including arc-shaped protective cover (21), buffer support column (22) and reinforced connecting plate (23). The arc-shaped protective cover (21) is made of wear-resistant high manganese steel and is formed by stamping. The outer surface is coated with a high-hardness wear-resistant coating. Multiple transverse reinforcing ribs (25) are spaced along the length of the top of the arc-shaped protective cover (21). The transverse reinforcing ribs (25) are integrally stamped with the arc-shaped protective cover (21). The buffer support column (22) is a solid steel column with both ends milled flat. One end of the buffer support column (22) is welded to the inner side of the arc-shaped protective cover (21) by carbon dioxide gas shielded welding. After welding, it is subjected to flaw detection. The other end has an internal threaded hole in the center and is connected to the chassis component bracket by high-strength bolts. A polyurethane buffer sleeve (24) is fitted on the outside of the buffer support column (22). An axial guide groove is provided on the inner side of the polyurethane buffer sleeve (24), which can cooperate with the guide protrusions on the outer surface of the buffer support column (22) to achieve positioning.

2. A multi-functional guard for a truck chassis as claimed in claim 1, characterised in that: The reinforcing connecting plate (23) is a Q355 steel plate with an L-shaped shape. It is located on the side connected to the arc-shaped protective cover (21) and is welded to the edge of the arc-shaped protective cover (21) by fillet weld. Multiple waist-shaped holes are opened on the side connected to the main protective plate (1) and it is fixed to the main protective plate (1) by bolts.

3. A multi-functional protective device for truck chassis according to claim 1, characterized in that: The high manganese steel substrate (11) of the main protective plate (1) is coated with a ceramic wear-resistant coating on its lower surface. The ceramic wear-resistant coating is prepared by plasma spraying process. The coating material is Al2O3-TiO2 composite ceramic. The surface of the ceramic wear-resistant coating is sandblasted.

4. A multi-functional guard for a truck chassis as claimed in claim 1, wherein: The inner side of the arc-shaped protective cover (21) of the local reinforced protective component (2) is covered with sound-absorbing cotton (26). The sound-absorbing cotton (26) is made of gradient density polyurethane and is attached to the inner side of the arc-shaped protective cover (21) by high temperature pressure-sensitive adhesive.

5. A multi-functional guard for a truck chassis as claimed in claim 1, wherein: The carbon fiber composite layer (12) inside the main protective plate (1) has carbon fibers arranged in a unidirectional manner, with the arrangement direction consistent with the length direction of the main protective plate (1).

6. A multi-functional guard for a truck chassis as claimed in claim 1, characterized in that: The high-temperature resistant epoxy resin adhesive used to bond the high manganese steel substrate (11) and the carbon fiber composite layer (12) can still maintain high shear strength under high temperature aging and low temperature conditions, and there is no cracking or delamination at the bonding point.

Images